ENABLE Reference Manual

THE GENERAL SERVER
Error Codes
When the General Server receives an error issued by the file
system, it returns the file-system error code in FILE-ERROR-CODE
of the General Server header. The General Server reserves the
ERROR-SUB-CODE field for codes to identify further the location
in ENABLEGS at which the error condition was detected. The only
meaningful ERROR-SUB-CODE is 96, which corresponds to the INSERT
OK, but DELETE on old image failed error message.
When ERROR-CODE=3 is returned from an open transaction,
additional information is returned in FILE-ERROR-CODE. Table E-5
shows the codes and their interpretations.
E-22